Gardner Bender PPR-1500 2 Pack,  Inch., Inside Diameter, 1 Hole, Rubber Insulated Steel Clamp SECURES WIRE AND cable in industrial, automotive, marine, and where vibrations may occur CORROSIVE-RESISTANT plated steel clamp FLEXIBLE  inch wide body SECURE with  inch screw Durable construction Flexible wire body secure with 1/4" screw Rubber insulated clamps secures wire and cable in industrial, auto/marine and where vibrations may occur Pack of two Corrosive resistant plated steel clamp